MediaWiki: Multiple vulnerabilities — GLSA 201206-09

Multiple vulnerabilities have been found in MediaWiki, the worst of which leading to remote execution of arbitrary code.

Affected Packages

www-apps/mediawiki on all architectures
Affected versions < 1.18.2
Unaffected versions >= 1.18.2

Background

The MediaWiki wiki web application as used on wikipedia.org.

Description

Multiple vulnerabilities have been discovered in mediawiki. Please review the CVE identifiers referenced below for details.

Impact

MediaWiki allows remote attackers to bypass authentication, to perform imports from any wgImportSources wiki via a crafted POST request, to conduct cross-site scripting (XSS) attacks or obtain sensitive information, to inject arbitrary web script or HTML, to conduct clickjacking attacks, to execute arbitrary PHP code, to inject arbitrary web script or HTML, to bypass intended access restrictions and to obtain sensitive information.

Workaround

There is no known workaround at this time.

Resolution

All MediaWiki users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=www-apps/mediawiki-1.18.2"
 

References

Release Date
June 21, 2012

Latest Revision
June 21, 2012: 1

Severity
high

Exploitable
remote

Bugzilla entries